Improvement in connecting-eods



ELIJAH' s. MERCE, or HARTFORD, CONNECTICUT.

lLam Patent No. 75,051, ma March 3, 186s.

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TO ALL WHCM MAY CONCERN; i l* Be it known that I, ELIJAH S. PIERCE, of Hartford, inv the 'c`ounty of Hartford, and State of Connecticut, have invented an Improved Connecting-Rod; and I do hereby declare that the following is a full, clear, and exact description of the same,- reference being had to tho accompanying drawings, and to the letters of refers ence marked thereon.

Like letters in the figuresA indicate like parts.

Figure 1 is a side view of the improved connecting-rod.

.Figure 2 is a top view of the same.

My invention consists in providing a connecting-rod between. t'wocranks, levers, or' other movingr parts of a machine witha'spring attachment, whereby'any excess of motion in the moving part will not be communicated tothe part moved. I

vA is a lever or crank attached to the shaft B, and D is a lever or crank attached to the shaft E. C isrthe connecting-rod joining `the. levers A and D'. Que end of the connecting-rod, atm, is fastened in the usual manner to the lever A. The other end, n, passes' through a hole or slide in the piece F, which is attached to the end of the lever D by'suitable bearings. v S is a spiral spring, resting-.against a shoulder on the rod C at one end, and against the piece F at the other; This spring is made stiienough to communicateAv the required .power tothe lever D, when the rod C is moved tojthe right, as shown in the drawings. G is a nut, which preventstheend of C from passing through the hole in the piece F.

.The operation of my invention is as follows Lotus suppose that it is wished to move the lever D through n. certain ar'c, at the end ofwhich its motion is arrested, and that the lever A, which .ornmunicutesV motion "to it, has an excess of movement for the purpose required.V lWhen the rod C commences its motion to thefxfight, the spring S presses against the piece F,and moves the lever D to the end of its assigned motion, where itst-ops. The parts ,A and C continuing to-move in the same direction, the spring S is compressed, and the rod Q .passes through 'the hole in the piece F. This is the position shown in the drawings. When the rod C returns, it moves throughthe piece F until the vnut 'G comes in contactI with it, when it is drawn black b y the rod C to its rst position., i

The advantages of my improved `connecting-rod over others,are, that it admits of any desired amount of motion .heinggiven to the parts D and E, without any alteration or adjustment ofthe rod C, merely by stopping the shaft E, or any attached part of the machine, atthe point desired; and also that should. any part of the machine become clogged or stopped from any cause, the ponen-acts 'harmlessly against the spring S, instead of breaking or otherwise damaging the machinery.

` Claims.

l What I claim as my invention, and desire to secure by Letters Patent, is-

1. An improvedconnectingod, constructed and operating substantially as herein set forth. 2. vThe combination of the devices C, F, G, and S, or their equivalents, substantially as specified.

ELIJAH S. PIERCE.

Witnesses:

HENRI F. Bonora, JNO. L. EMERSON. 

